u-boot/arch/arm/mach-imx/sip.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright 2017 NXP
 */

#include <common.h>
#include <asm/arch/sys_proto.h>

unsigned long call_imx_sip(unsigned long id, unsigned long reg0,
			   unsigned long reg1, unsigned long reg2)
{
	struct pt_regs regs;

	regs.regs[0] = id;
	regs.regs[1] = reg0;
	regs.regs[2] = reg1;
	regs.regs[3] = reg2;

	smc_call(&regs);

	return regs.regs[0];
}

/*
 * Do an SMC call to return 2 registers by having reg1 passed in by reference
 */
unsigned long call_imx_sip_ret2(unsigned long id, unsigned long reg0,
				unsigned long *reg1, unsigned long reg2,
				unsigned long reg3)
{
	struct pt_regs regs;

	regs.regs[0] = id;
	regs.regs[1] = reg0;
	regs.regs[2] = *reg1;
	regs.regs[3] = reg2;
	regs.regs[4] = reg3;

	smc_call(&regs);

	*reg1 = regs.regs[1];

	return regs.regs[0];
}
SPDX: Convert all of our single license tags to Linux Kernel style When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com> 2018-05-06 21:58:06 +00:00			`// SPDX-License-Identifier: GPL-2.0+`
imx: add sip function Add SiP (Silicon Provider) services function to issue SMC call to Arm Trusted Firmware. More SiP information could be found in https://github.com/ARM-software/arm-trusted-firmware/blob/master/ docs/arm-sip-service.rst Signed-off-by: Peng Fan <peng.fan@nxp.com> Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com> Cc: Stefano Babic <sbabic@denx.de> 2018-01-10 05:20:23 +00:00			`/*`
			`* Copyright 2017 NXP`
			`*/`

			`#include <common.h>`
			`#include <asm/arch/sys_proto.h>`

			`unsigned long call_imx_sip(unsigned long id, unsigned long reg0,`
			`unsigned long reg1, unsigned long reg2)`
			`{`
			`struct pt_regs regs;`

			`regs.regs[0] = id;`
			`regs.regs[1] = reg0;`
			`regs.regs[2] = reg1;`
			`regs.regs[3] = reg2;`

			`smc_call(&regs);`

			`return regs.regs[0];`
			`}`
imx: sip: add call_imx_sip_ret2 This function will be used by i.MX8 fuse driver. Signed-off-by: Peng Fan <peng.fan@nxp.com> 2019-04-12 07:54:50 +00:00
			`/*`
			`* Do an SMC call to return 2 registers by having reg1 passed in by reference`
			`*/`
			`unsigned long call_imx_sip_ret2(unsigned long id, unsigned long reg0,`
			`unsigned long *reg1, unsigned long reg2,`
			`unsigned long reg3)`
			`{`
			`struct pt_regs regs;`

			`regs.regs[0] = id;`
			`regs.regs[1] = reg0;`
			`regs.regs[2] = *reg1;`
			`regs.regs[3] = reg2;`
			`regs.regs[4] = reg3;`

			`smc_call(&regs);`

			`*reg1 = regs.regs[1];`

			`return regs.regs[0];`
			`}`